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MFSB · MFS Active Core Plus Bond ETF ETF

Alerts for MFSB
$24.53 +0.00 (+0.00%) At close · Sep 4

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 1
Total Value: $1,273,125
Total Shares: 51,068

Institutional Ownership Trend

7 quarters

Holder Concentration

Across 1 13F filers · Δ vs Mar 31, 2026
Top Holder
100.0%
Dec 2024 → Jun 2026 · range 21.0% – 100.0%
+63.4 pts
Top 5
100.0%
Dec 2024 → Jun 2026 · range 71.1% – 100.0%
+28.9 pts
Top 10
100.0%
Dec 2024 → Jun 2026 · range 87.9% – 100.0%
+12.1 pts
HHI
10,000
Dec 2024 → Jun 2026 · range 1,270 – 10,000
Highly concentrated+8,258

Quarterly Activity

vs Mar 31, 2026
New
1
Increased
0
Decreased
0
Sold Out
33
Unchanged
0
Holder count: -32
Institutional value: -99.6%
Shares held: -99.6%

Top New Positions

vs Mar 31, 2026
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Mar 31, 2026
Institution Previously Held Last Value (USD) Open
Showing 1 of 1
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Holder Value (USD) % of 13F Shares Open